Cooling compound and lubricant and process of manufacturing same



Patented Dec. 9, 1930 UNITED STATES PATENT OFFICE FRANK BROEMAN, 0FCINCINNATI, OHIO, ASSIGNOB TO NATIONAL PRODUCTS- SUPPLY COMPANY, OFASHLAND, KENTUCKY, A CORPORATION OF WEST VIR- GINIA COOLING COMPOUND ANDLUBRICANT AN 1) PROCESS OF MANUFACTURING SAME No Drawing.

My invention relates to cooling compounds for the-journals'of railwaycar Wheels, .and

particularly to a novel type of cooling compound which also serves as alubricant.

In the art there have been a number of different types of coolingcompounds the purpose of which has been to prevent hot boxes on railwaycars. Most of these products have a decided disadvantage due to the factthat if they are compounded for their cooling action they fail aslubricants, and if they are compounded for their lubricating action theyfail as cooling compounds.

It is the object of my invention to provide a cooling compound andlubricant which will have a small amount of lubricant in it which is notof the type which will readily separate. A further object is theincorporation in the compound of materials which will tend to keep thematerial in a completely emulsified condition. I further incorporateenough water in the compound so that as the axles of the car wheelsrotate there is adequate wa ter to keep the journals cool.

The above and other objects to which reference will be made in theensuin disclosure I accomplish by that novel combination and process forcompounding same of which I will cite a specific example.

For a base for my compound I prefer to use a potash soft soap which maybe made with semi-drying oils of the type of corn oil, linseed oil, soyabean oil, or cottonseed oil.

. Where a perfume is added to the compound,

fish oils may be used or partially hydrogenated oils, although the titerof partially hydrogenated oils is so high that compounds made with thisproduct will be somewhat hard for winter use.

In order to facilitate emulsification I prefer to add some saponifiableoil such as neats foot oil. To give the com ound body I may use cocoanutoil or palm Kernel oil, or any of the other oils which, although readilymelted at fairly low temperatures, will, when solidified, have somebody. Further, to assist in the emulsification I prefer to use somestearic acid or its equivalent, such as hydrogenated fatty acid of hightiter, which-is preferably saponified with sodium carbonate.

Application flied March 28, 1928. Serial No. 265,525.

I may also incorporate in the compound some finely divided carbon suchas flaked graphite.

As a specific example of the ingredients which are ordinarily used in abatch of my cooling compound, to make 148 lbs. of the mixture, I proceedto manufacture one hundred pounds of soft soap, for example from cornoil. The finished soap will test about 40% anhydrous soap so that therewill be contributed. from the soft soap about sixty pounds of water. Tothe soft soap thirty pounds of water is added. Then about five andone-half pounds of stearic acid is added with enough sodium carbonate tosaponify the stearic acid. I may use caustic soda for saponifying thestearic acid, but I find it preferable to use sodium carbonate as thegas evolved from the saponification assists in the properemulsificatiori of the product.

After the aforenoted ingredients have been thoroughly mixed together Iadd three pounds of flaked graphite and three pounds of cocoanut oil.Three pounds of neats foot oil is also-added which makes up the onehundred and forty-eight poundv batch of fin ished product. While astraight mineral lubricating oil might be used instead of the neats footoil and cocoanut oil as lubricants, it would tend to separate in eitherhot or cold weather which would be extremely undesirable as anyseparation tends to allow the compound to break, in which condition thewater would not exert a proper cooling function.

While my product is made with ingredients which may be varied atdifferent times in accordance with the market price, I use in mycompound about sixty per cent of water, thirty per cent of potashvegetable oil soap, figured on an anhydrous basis, two per cent of asaponifiable lubricating oil, such as neats foot, two per cent of avegetable oil of the cocoanut group characterized by a low melting pointwith a firm congealingstructure, two per cent of finely dividedgraphite, and about four per cent of a saponified fat or fatty acid ofhigh titer. The percentages may, of course, be varied a reasonableamount. The reaction of the batch, after all the ingredients are in, isneutral.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

A cooling compound and lubricant consist- 5 ing substantially of thefollowing ingredients :100 lbs. of potash vegetable oil soap containingsixty per cent of water, 30 lbs. of

water, 3 lbs. of neats foot oil, 3 lbs. of graphite mixed with threepounds of cocoanut oil 10 and six and one quarter pounds of stearic acidsoap.

FRANK C. BROEMAN.

